Paper-sheet-feeding mechanism for printing-presses.



N0. 852. 5%. PATENTED MAY 7, 1907.

J. E. TUCKER.

PAFER 3mm FEEDING MECHANISM FOR PRINTING'PRESSES.

APPLICATION FILED DBG.14,1905.

LV/ 751V TOR UNITED STATES PATENT @FETCE JUN IUS EDGAR TUCKER, OF MEMPHIS, TENNESSEE, ASSIGNOR OF ON 1 TO WILLIAM S. BRIAN, OF MEMPHIS, TENNESSEE.

PAPER-SHEET-FEEDING MECHANlSM FOR PRlNTING-PRESSES.

Specification of Letters Patent.

batenteci May '7, 1907.

Application filed December 14,1905. Serial No. 291,747.

To all whom it may concern:

Be it known that I, J UNIUS EDGAR TUCKER, a resident of Memphis, in the county of Shelby and State of Tennessee, have invented certain new and useful Improvements in Paper- Sheet- Feeding Mechanism for Printing- Presses; and 1 do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and usethe same. My invent on relates to improved paper sheet feeding mechanism for printing presses, the object of the invention, being to provide simple and efficient means for feeding sheets singly from the top of a pile of sheets, and. to

provide means controlled by the sheet being fed, to accurately regulate the feed.

With" this object in view, the invention consists incertain novel features of construction and combinations and arrangements of arts as hereinafter set forth and pointed out in the claims.

In the accompanying drawings; Figure l is a view in side elevation illustrating-my improvements; Figs. 2 and 3 are enlarged views showing details of construction. I

1 represents a pile of paper sheets having any suitable means for elevating the pile sheets are removed from the topv The sheets are fed from the top of the pile be' tween wheels or rollers 2, 3, to tapes 4 for conveying the sheets to the platen. At the ends of the shaft 2 which carries the wheels or rollers 2, slotted crank-arms are pro- 5 vided and to these cranlearins, the forward ends of rods 6 are mov-ably connected. Stops 24 are provided, to limit the downward movement of the rear ends of said rods. Do-

pending arms 7 are adjustably'securcd to the rods 6 by means of set screws Sand at their lower ends, the arms '7 carry inclined feed scrapers 9 to move the sheets forward from the pile. The scrapers 9 are made of bone or other suitable material and are adjustably secured to the arms 7 by means of set screws 10'.

A long bar 11 is fulcrumed near its forward end (as at 11) to a part of the framework (not shown) and projects at its rearportion, over a pin 12 projecting laterally from a disk 13, mounted ecccntrically on a cross rod 7 connecting the depending arms 7. The bar 11 is provided at its forward end with a depending hook, nczmally engaged by a trip j lever 16, the forward end of the rod 11 being so supported by the trip lever 16 that the weight of the rear, heavier portion of said rod will not be borne by the pin 12 on disk 13. The trip lever 16 is pivoted between its ends to an arm 17 projecting from a rock shaft. 18, suitably mounted in the framework and the lower end of said trip lever projects across the path of the paper sheet as the Hatter moves from the pile to the feeding tapes, An arm 19 is secured to the shaft 18 and. projects upwardly, in a diagonal direcj tion therefrom, terminating at its upper end in position to be actuated by a cam 20 on the shaft 2*. Guide lingers 21 are also secured to the shaft 18 and extend forwardly beyond the lower end of the trip lever 16. The forward ends of the lingers .21. are also in the path of the sheets as they move from the pile to the feed belts.

Below the eccentrically mounted disk 13, a fixed track 22 is located, but the disk is held out of contact w ith this track when the scrapers are in contact with the pile of paper, by means of a light spring 23, said spring acting to turn the disk on its eccentric mountings a sufficient distance for this purposcl When however, the eight of the rod 11 is permitted to come upon the pin 12 of disk 13, the power of the light spring 22.} will be overcome, and the disk will be caused to engage the track and will be made to roll thereon by the forward movement of the rods 6 during the operation of the crankshaft 2.

The operation of the mechanism is as foli lows :-Thc rotation of the shaft 2"- causcs its I cranks 5 to move the rod 6 forwardly from I a u i the position shown in the drawing and the scrapers to move the top sheet of paper forwardly. The forward edge of the sheet will 5 engage the trip lever 16 and swing the latter until the end of the sheet strikes the lingers 2], at which time, the trip lever 16 will have l released the hooked end of rod or bar 1].

or eccentric was above and out of contact with the track 22, but at the instant the bar 11 is released, its heavier end, resting on the pin 12 of disk 13, will cause said disk to turn resistance of spring 23, and to cngage track l 22. As the crank continues to turn, the rod 6 will be moved forwardly and the disk or eccentric 13 caused to roll on the ll'iLLk 22.

Just prior to the :rclcase of. bar 11, the disk ice on its eccentric mounting, against the slight During this forward movement of the rod 6 1 1o seam/a and the rolling of the disk 18 on track 22,,the I for reciprocating the same, a depending arm eccentric connection of the disk with the arms 7 will rise and cause the arms 7 and scrapers 9 to be elevated outof contact'with the paper sheet. The crank arms movedpa'st their lowest half stroke and will begin to elevate the forward ends of the rods 6, the rear ends of said rods coming in contact with and resting upon the stops 2 As the cranks 5 continue to rise, the forward ends of the rods 6 will be raised suiiiciently to lift the disk or eccentric off of the track 22. The cam will have moved arm 19 and turned shaft 18 to elevate the fin ers 21,so that the sheet can pass to the fee ing tapes. As the ecc entrically-mounted disk 13 rolls on the track 22 and the pin 12 thereon rises, the bar 1 1, resting on-said pin, will be turned onits fulcrum and its hooked end will be moved rearwardly. The movement of the shaft 18 by the cam 20 will now bring the trip lever 16 and thehookcd end of bar 11 into locked engagement, thus relieving the pin 12 on disk 13, of the weight of said bar 11. The spring 23 can now cause the disk or eccentric to turn to the-position shown in Fig. 2, withsaid disk or eccentric above the track and the fingers 9 in contact with the top sheet of the pile. During the continuance of operation of the mechanisms, the movements above described will be repeated. 4

Various slight changes might be made without departing from the spirit of my in vention or limiting its scope, and hence I do not wish to limit myself to the precise details herein set forth.

ll aving fully described my invention what i. claim as new and desire to secure by Lettersmeans conlrollcd by t e sheet bcingicd, to

move the ccccmric in position to be actuated by the rod through anot icr part of the throwol the lattcr, to raise thc scraper.

'2. in feeding mechanism ior prmtmg resses, the combination with a rod, means tor reciprocating .said rod. and a depending scraper carried by said rod, ol" a disk having eccentric connection wit h said scrapcr bclow the rod, a hard track bctwccn said disk and thclowcr end obthc ss'iapi'r. moans l'or holding the disk out of t'ull'lnl'l with said track, means l'or moving said dish illlo rontact with the track, and moans cullli'nilidtli) the sheet for rclcasing said last nn-mioned means.

3. in feeding prcsses, tho combination with a rod, means will have then mechanism for printing carried by said rod and a scraper at the lower end of said arm, of a disk'having eccentric connection with said arm, a. fixed track'below said disk, means tending to retainthe yo disk out of contact with the track, spin on said disk, ,a pivoted rod projecting over said pin, and a trip device controlled by a sheet being fed, to release and permit its rear end to descend and-move the disk into contact with. the fixed track during the movement of the first-mentioned rod. '4. In a feeding mechanism for printing presses, the combination with a shaft, areciprocaling rod actuated b said shaft, and a scraper carried-by said r0 of a disk having eccentric connection with said scraper, a fixed track below said disk, means for holding said disk out ofcontact with the track, means actuated by the paper being led, to

move the disk into contact with the track,

and means actuated by said shaft to restore the parts.

5. In a feeding mechanism for printing n'csses, the combination with a reciprocating 0 bar and a scraper carried thereby to move a sheet otpaper oil the top ofapile, of means l'or elevating the scra e rs from operative position, a trip actuatec by the paper-forced trolling the operation of saidelevating means guard lingers serving to hold the sheet temporarily, a cam or eccentric and means actu: atcd by said cam or eccentric and operating to move said guard fingers and restore the trip. I

6. In a feeding mechanism for printing presses, the con'ibinationwith a I'BGIQIOOat ing bar or rod, an arm' depending .there: from and a feed scraper at the lower ends of said arm to move a sheet of paper oil the top r05 ot a pile, of a horizontal track, a cam carried by the depending arm and normally above the track, andnieans controlled by a moving sheet to permit the cam to engage the track, roll thereon and elevate the scrapers. U 7. In a feeding mechanism for printing presses, the combination with a reciprocating rod, a crank shaft for reciprocating said rod, an arm depending from said rods and a'feed scraper at the lower end of said arm toens 1 5 gage and move a sheet of paper oi'i' a pile, of a horizontal track, a cam carried by the arm, to run on said track to elevate the scraperironrthe top sheet, vmeans norn'ially holdingtrip mechanism operated by a moving sheet to move the cam into engagement with the track to elevate the scraper.

In testimony whercotf-I. have signed this specification in the presence of two sub- 12. seril'iing'witncsscs. I I JUNI ITS ICDCEAR TUCKER. Witnesses: p

\YiLtun V. lll'nsox. ALnnn'r A. .\,l.-u.sr.

the canr out of contact with the t ack and 

